JBL SCS138 - Manual (Page 10)

10
If there is no sound from any of
the speakers:
• Check that receiver/amplifier
is on and a source is playing.
• Check that the powered
subwoofer is plugged in, its
Power switch
¡ is switched
on to the “ON•” position.
• Check all wires and
connections between
receiver/ amplifier and
speakers. Make sure all wires
are connected. Make sure
none of the speaker wires are
frayed, cut or punctured.
• Review proper operation of
your receiver/amplifier.
If there is no sound coming
from one speaker:
• Check the “Balance” control
on your receiver/amplifier.
• Check all wires and con-
nections between receiver/
amplifier and speakers. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.
• In Dolby Digital or DTS ®
modes, make sure that the
receiver/processor is
configured so that the
speaker in question is
enabled.
If there is no sound from the
center speaker:
• Check all wires and
connections between
receiver/
amplifier and speaker. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.
• If your receiver/processor is
set in Dolby Pro Logic mode,
make sure the center speaker
is not in phantom mode.
• If your receiver/processor
is set in Dolby Digital or DTS ®
mode, make sure the
receiver/processor is con-
figured so that the center
speaker is enabled.
If the system plays at low
volumes but shuts off as
volume is increased:
• Check all wires and connecti-
ons between receiver/
amplifier and speakers. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.
• If more than one pair of main
speakers is being used, check
the minimum impedance
requirements of your
receiver/amplifier.
If there is low (or no) bass
output:
• Make sure the connections to
the left and right “Speaker
Inputs” have the correct
polarity (+ and –).
• Make sure the subwoofer is
plugged into an active
electrical outlet.
• Make sure the powered
subwoofer is plugged in and
switched on.
• In Dolby Digital or DTS ®
modes, make sure your
receiver/processor is
configured so that the
subwoofer and LFE output are
enabled.
If there is no sound from the
surround speakers:
• Check all wires and
connections between
receiver/ amplifier and
speakers. Make sure all wires
are connected. Make sure
none of the speaker wires are
frayed, cut or punctured.
• Review proper operation of
your receiver/amplifier and its
surround-sound features.
• Make sure the movie or TV
show you are watching is
recorded in a surround-sound
mode. If it is not, check to see
if your receiver/ amplifier has
other surround modes you
may use.
• In Dolby Digital or DTS ®
modes, make sure your
receiver/processor is
configured so that the
surround speakers are
enabled.
• Review the operation of your
DVD player and the jacket of
your DVD to make sure that
the DVD features the desired
Dolby Digital or DTS
® mode,
and that you have properly
selected that mode using both
the DVD player’s menu and
the DVD disc’s menu.
T R O U B L E S H O O T I N G